Concealed fastening.



E. A. FALLER.

GONGEALED FASTENING.

APPLICATION IILED SEPT.30, 1907.

918,522, Patented Apr. 20, 1909.

7 ,3 b I F UNITED STATES PATENT OFFICE.

ERNEST A. FALLER, OF NEW YOlth, N. Y., ASSIGNOR TO ROTHSUHILD & COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CONCEALED FASTENING.

Specification of Letters Patent.

Patented April 20, 1909.

Application filed September 30, 1907. Serial No. 395,080-.

new and useful Improvements in Concealed l l l l l l Fastenings, of which the following is a speci fication.

T e present invention refers to a method of and devices for concealing fastening-s, more particularly such as used in connecting moldings or similar parts to a body as, for instance, the moldings in carriage or automo bile bodies.

Heretofore, moldings were secured to body portions by means of nails, screws or bolts,

aving their heads exposed and therefore, fre uently forming an undesirable feature of t e surface of the moldings. In order to avoid the exposure of the heads of the fastening means, wooden plugs were employed for concealing the same, but even those weretoo Figure 1 is a longitudinal cross section of a bar or molding, intended to be secured to a body portion, i ig'. 2, a side elevation of the same, and ig. 3, a cross section. figs. 4, 5, 6, 7 and 5 illustrate successive stops in the formation of the concealed fastening, and 9 is a side elevation of a preferred form i of the tool used therein.

cons icuous andafastening means is desired, wine 1, in performing its proper function,

should be concealed in such a way that the surface of the molding could be varnished, lac uered or ornamented in any other way, wit out showing the location where the molding is secured to the body portion.

. In one form of the present invention a bar or molding is employed which either is rovided with a series of low lugs, or into w llCll such In or their substitutes are molded or stampe These lugs are then perforated by means of a special tool, the fastening means, such as screws, then inserted therein so as to unitethe molding with the body portion, a plug of material similar to that of the molding is placed in the o ening on the head of the fastening means, t 1e metal, sur rounding the top of the plug, is hammered down upon the same and finally the surface of the molding filed or ground off, so that no trace can be seen where the fastening means holds the molding to thebod ortion. 2. t is 1d by ermanent flexioii of the material of the mo ding, and for this reason-such material should be used only which is reasonably pliable and suitable for this purpose.

The invention is illustrated in the accompanfiing drawings forming part of the present a p 'cation and showing the successive steps 0 the method of concealing fastenings for moldings, as well as the completed fastening.

The reference numeral 1 indicates a bar or molding of suitable material such as iron, brass or aluminum, having a cross section substantially, as'shown in Fig. 3. This molding may preferably be provided with lugs 2, each having a central depression 3, for the purpose of centering the tool shown in Fig. 9 for the operation of making the perforations or holes 5 and 6. After the holes are drilled, a ridge 4 remains all around the opening, which ridge is used as hereinafter more fully will be described.

Metal bars without the lugs, shown in Fig. 1, may be worked and shaped as indicated in Figs. 4 and 5, by causing a suitable annular stamping tool to produce a depression 8 on the lower side of t 1e molding 1, while a cupshaped tool receives the displaced metal 7 on the up er side of the molding 1. The special dril is employed to produce the holes 10 and 1 1. The molding is then placed upon the body portion 15, screws 12 are inserted into the openings 11 and screwed tight until the molding 1 is securely fastened to the body ortion. A truncated plug 13 is set upon t 1e head of the screws 12 and the ridge 14 is hammered tightly on to the plug 13, as shown in Fig. 7. By means of a suitable planer or file, the superfluous metal is then removed until the surface of the molding is perfectly smooth and no trace of the fastenmg means can be seen, except by most careful ins ection. It is not essential, however, that t e invention should be limited to the fastening of bars or molding to a body, or that wood screws should be employed for uniting the two bodies. The fastening means on both outer sides of the bodies may be concealed, or in other words, both ends of a bolt or screw may be embedded and concealed without departin from or enlarging the intended scope of t e invention.

As new and useful is claimed and desired to be secured by Letters Patent of the United States A body of malleable material having therethrough a counter-sink perforation, a headed fastening means seated in said perforation, a i plug bearing upon the head of said fastening means within said counter-sink, the sides of said plug flaring toward the head of said fasl tening means, the material of said body snugly embracing said head and said plug.

In Witness whereof I have hereunto set my hand in the presence of two subscr bing Wit- 1 nesses, at New York, in the county of New York and State of New York, this 3rd day of 10 August, 1907.

ERNEST A. FALLER.

In presence of CHAS. HELD, RALPH J. SACHERS. 

